Supporters of charter schools will march in Brooklyn in September.

About 15,000 supporters of city charter schools will march in Brooklyn on Sept. 28 to mark the sector’s enrollment of more than 106,000 Big Apple kids for the school year that begins in the fall, the Daily News has learned.

Organizers with the deep-pocketed charter school lobbying group Families for Excellent Schools promise the same flashy production values as in previous pro-charter-school rallies, when performers such as the musician Questlove entertained thousands of students whose schools gave them the day off.

Families for Excellent Schools CEO Jeremiah Kittredge said the upcoming event tells Mayor de Blasio to support the publicly funded, privately run schools.

“As New York City’s public charter schools reach the important milestone of serving 100,000 students, we know parents will not rest until every child in New York City attends an excellent school,” Kittredge said. “Parents and their elected allies will march in September because public charters can end our city’s schools crisis — if city leaders stand with them.”

Charter schools account for almost 10% of the city’s nearly 1.1 million public school kids, with 205 schools now in operation and plans for another 50 schools to open by 2018.

Charter schools outscore traditional public schools on state reading and math exams, but their growth has been opposed by critics who accuse them of taking resources from traditional public schools.

Charter school supporters say their schools can end the city's education crisis with support from city pols.

(Richard Harbus/for New York Daily News)

Organizers said attendees at September’s march will include representatives of many of the city’s charters, including longtime de Blasio foe Eva Moskowitz, whose Success Academy charter school network enrolls roughly 11,000 students.

De Blasio has clashed with Moskowitz and other charter operators over the issue of classroom space for their schools, but he struck a conciliatory tone at an unrelated press conference Monday, saying the city has made deep efforts to build partnerships with charters.

A spokesman for Families for Excellent Schools said the group is still in talks with the city on the exact location of September’s event. Previous pro-charter rallies held by the group took place in Manhattan’s Foley Square and Brooklyn’s Cadman Plaza.

The spokesman wouldn’t say how much the group intends to spend on September’s march.